sungrowd-go: bespoke battery management for the Sungrow SH5.0RS inverter

My current setup: Small townhouse in Brisbane. 3.9kW solar array (ugh small roof). Sungrow SH5.0RS inverter. Sungrow SBR096 home battery (9.6kWh). BYD Atto3 Premo. AGL have a Night Saver EV Plan with very cheap electricity from midnight to 6am each day (at my location, only 8c/kWh). I mostly charge the car in that time period. Sungrow provide the iSolarCloud app/site that provides control of the…